Two-way communications device having a single transducer

Details Two-way communications device having a single transducer Two-way communications device having a single transducer

2011-02-01

2011-02-01

Jamal, Alexander (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having bi-directional transducer

C379S406080

Reexamination Certificate

active

07881483

ABSTRACT:
Embodiments of the invention provide a small and economical two-way communications device that has both an excellent echo-cancellation function that substantially suppresses echoes over the entire frequency range and an excellent voice-operated exchange function that provides natural switching of conversation sounds while protecting against unnatural disconnection or echoes during conversation, even when a reception signal and a transmission signal are superimposed in a single transducer.

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